The Eastern Congo 



when they are " relaxed " for the purpose. Napthaline is 

 used as an insecticide against destructive mites, and a 

 solution of formalin is used for preserving larvae. 



The following entomological field notes required from a 

 collector concerning his captures will give the reader some 

 idea of the work entailed : — 



Entomological Data Required from a Collector. 



1. Locality. 



(a) If name is not on map give approximate position in 

 relation to a place which is on the map. Latitude 

 and longitude is always desirable. 



(6) Write a short account of geographical features. This 

 will include the general configuration, the presence 

 of water, and distance from the sea in the case of 

 islands. 



(c) Nature of the flora, noting special types. 



{d) Vertebrate fauna ; abundance or not of birds, reptiles, 

 mammals. 



{e) If a mountain, indicate what side. 



(/) If a river, indicate which bank. 



{g) Height above sea-level. 



2. Climate. 



(a) General remarks. 



{b) Rainfall and humidity. 



(c) Temperatures taken at coolest period, medium period 



and hottest time of day. 



(d) Kind of season : wet, dry, or both. 



(e) Prevailing winds. 



250 



